private async Task <StorageFile> CaptureFile(CancellationToken ct, CameraCaptureUIMode mode)
{
await ValidateRequiredPermissions(ct);
var mediaPickerActivity = await StartMediaPickerActivity(ct);
// An intent to take a picture
var takePictureIntent = new Intent(MediaStore.ActionImageCapture);
// On some device (like nexus phone), we need to add extra to the intent to be able to get the Uri of the image
// http://stackoverflow.com/questions/9890757/android-camera-data-intent-returns-null
var photoUri = mediaPickerActivity.ContentResolver.Insert(MediaStore.Images.Media.ExternalContentUri, new ContentValues());
takePictureIntent.PutExtra(MediaStore.ExtraOutput, photoUri);
var result = await mediaPickerActivity.GetActivityResult(ct, takePictureIntent, CameraRequestCode);
if (result.ResultCode != Result.Ok)
{
if (this.Log().IsEnabled(LogLevel.Information))
{
this.Log().LogInformation($"Picture not taken. Result: {result.ResultCode}");
}
// No picture return null
return(null);
}
return(await CreateTempImage(
ContextHelper.Current.ContentResolver.OpenInputStream(photoUri),
Path.GetExtension(new Uri(photoUri.Path, UriKind.RelativeOrAbsolute).LocalPath)
));
}
private Task <StorageFile> DoCaptureFileAsync(CameraCaptureUIMode mode)
{
return(Task.Run <StorageFile>(async() =>
{
UIApplication.SharedApplication.InvokeOnMainThread(() =>
{
_pc.SourceType = UIImagePickerControllerSourceType.Camera;
switch (mode)
{
case CameraCaptureUIMode.Photo:
_pc.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Photo;
break;
case CameraCaptureUIMode.Video:
_pc.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video;
break;
}
UIApplication.SharedApplication.KeyWindow.RootViewController.PresentViewController(_pc, true, null);
});
_handle.WaitOne();
if (!string.IsNullOrEmpty(_filename))
{
return await StorageFile.GetFileFromPathAsync(_filename);
}
return null;
}));
}
/// <summary>
/// This method takes a picture.
/// Right now the parameter is not evaluated.
/// </summary>
/// <param name="mode"></param>
/// <param name="options"></param>
/// <returns></returns>
public async Task <StorageFile> CaptureFileAsync(CameraCaptureUIMode mode, StoreCameraMediaOptions options)
{
var t = IsStopped();
Mode = mode;
if (Mode == CameraCaptureUIMode.Photo)
{
camerButton.Icon = new SymbolIcon(Symbol.Camera);
}
else if (Mode == CameraCaptureUIMode.Video)
{
camerButton.Icon = new SymbolIcon(Symbol.Video);
}
Options = options;
// Create new MediaCapture
MyMediaCapture = new MediaCapture();
var videoDevices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
var backCamera = videoDevices.FirstOrDefault(
item => item.EnclosureLocation != null &&
item.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Back);
var frontCamera = videoDevices.FirstOrDefault(
item => item.EnclosureLocation != null &&
item.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Front);
var captureSettings = new MediaCaptureInitializationSettings();
if (options.DefaultCamera == CameraDevice.Front && frontCamera != null)
{
captureSettings.VideoDeviceId = frontCamera.Id;
}
else if (options.DefaultCamera == CameraDevice.Rear && backCamera != null)
{
captureSettings.VideoDeviceId = backCamera.Id;;
}
await MyMediaCapture.InitializeAsync(captureSettings);
// Assign to Xaml CaptureElement.Source and start preview
myCaptureElement.Source = MyMediaCapture;
// show preview
await MyMediaCapture.StartPreviewAsync();
// now wait until stopflag shows that someone took a picture
await t;
// picture has been taken
// stop preview
await CleanUpAsync();
// go back
CurrentWindow.Content = originalFrame;
mainGrid.Children.Remove(this);
return(file);
}
/// <summary>
/// Launches the CameraCaptureUI user interface.
/// </summary>
/// <param name="mode">Specifies whether the user interface that will be shown allows the user to capture a photo, capture a video, or capture both photos and videos.</param>
/// <returns>When this operation completes, a StorageFile object is returned.</returns>
public Task <StorageFile> CaptureFileAsync(CameraCaptureUIMode mode)
{
#if __ANDROID__
if (IsIntentAvailable())
{
Intent i = new Intent(Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity, typeof(CameraActivity));
Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity.StartActivity(i);
return(Task.Run <StorageFile>(async() =>
{
_handle.WaitOne();
if (!string.IsNullOrEmpty(_path))
{
return await StorageFile.GetFileFromPathAsync(_path);
}
return null;
}));
}
return(Task.FromResult <StorageFile>(null));
#elif __IOS__
return(DoCaptureFileAsync(mode));
#elif WINDOWS_UWP || WINDOWS_APP
return(Task.Run <StorageFile>(async() => {
var f = await _cc.CaptureFileAsync((Windows.Media.Capture.CameraCaptureUIMode)((int)mode));
return f == null ? null : f;
}));
#elif WINDOWS_PHONE_APP
if (_type10 != null)
{
return(Task.Run <StorageFile>(async() =>
{
Type modeType = Type.GetType("Windows.Media.Capture.CameraCaptureUIMode, Windows, ContentType=WindowsRuntime");
object modeVal = Enum.ToObject(modeType, mode);
var f = await(Windows.Foundation.IAsyncOperation <Windows.Storage.StorageFile>) _type10.GetRuntimeMethod("CaptureFileAsync", new Type[] { modeType }).Invoke(ccu, new object[] { modeVal });
return f == null ? null : f;
}));
}
return(Task.FromResult <StorageFile>(null));
#elif WINDOWS_PHONE
_task.Show();
return(Task.Run <StorageFile>(() =>
{
_handle.WaitOne();
return (StorageFile)null;
}));
#else
return(Task.FromResult <StorageFile>(null));
#endif
}
public static async Task <StorageFile> CameraCaptureAsync(bool CropEnabled, CameraCaptureUIMode cameraCaptureUIMode, Size size)
{
CameraCaptureUI captureUI = new CameraCaptureUI();
captureUI.PhotoSettings.Format = CameraCaptureUIPhotoFormat.Jpeg;
captureUI.VideoSettings.Format = CameraCaptureUIVideoFormat.Mp4;
captureUI.VideoSettings.AllowTrimming = true;
captureUI.PhotoSettings.AllowCropping = CropEnabled;
if (CropEnabled)
{
captureUI.PhotoSettings.CroppedSizeInPixels = size;
}
StorageFile imgFile = await captureUI.CaptureFileAsync(cameraCaptureUIMode);
return(imgFile);
}
public static async Task <IStorageFile> CaptureAsync
(CameraCaptureUIMode captureMode)
{
var cameraUI = new CameraCaptureUI();
var capturedMedia = await cameraUI.CaptureFileAsync(captureMode);
if (capturedMedia == null)
{
return(null);
}
// Set the default save to location based on the content MIME type
var contentType = capturedMedia.ContentType;
var defaultLocation = contentType.StartsWith("image")
? PickerLocationId.PicturesLibrary
: PickerLocationId.VideosLibrary;
// Save type options
var fileSaveType = new KeyValuePair <String, IList <String> >(
capturedMedia.DisplayType,
new List <String> {
capturedMedia.FileType
});
// Get the file to save the content to
var savePicker = new FileSavePicker
{
SuggestedStartLocation = defaultLocation,
SuggestedFileName = capturedMedia.Name
};
savePicker.FileTypeChoices.Add(fileSaveType);
var fileToSaveTo = await savePicker.PickSaveFileAsync();
if (fileToSaveTo == null)
{
return(null);
}
// Move the file return the new file
await capturedMedia.MoveAndReplaceAsync(fileToSaveTo);
return(fileToSaveTo);
}
private async Task <StorageFile> CaptureFile(CancellationToken ct, CameraCaptureUIMode mode)
{
UIImagePickerController picker = null;
var cameraDelegate = new CameraDelegate();
if (UIImagePickerController.IsSourceTypeAvailable(UIImagePickerControllerSourceType.Camera))
{
picker = new UIImagePickerController();
picker.Delegate = cameraDelegate;
picker.AllowsEditing = PhotoSettings.AllowCropping;
picker.SourceType = UIImagePickerControllerSourceType.Camera;
switch (mode)
{
case CameraCaptureUIMode.Photo:
case CameraCaptureUIMode.PhotoOrVideo:
picker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Photo;
break;
case CameraCaptureUIMode.Video:
picker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video;
break;
}
}
else
{
// Probably running in the simulator
if (this.Log().IsEnabled(LogLevel.Warning))
{
this.Log().Warn($"'{UIImagePickerControllerSourceType.Camera}' not available - picking from albums");
}
picker = new LockedOrientationUIImagePickerController(DisplayInformation.AutoRotationPreferences.ToUIInterfaceOrientationMask())
{
// Use the camera roll instead of crashing
SourceType = UIImagePickerControllerSourceType.PhotoLibrary
};
await ValidatePhotoLibraryAccess();
}
picker.Delegate = cameraDelegate;
UIKit.UIApplication.SharedApplication.KeyWindow?.RootViewController.PresentModalViewController(picker, true);
using (ct.Register(() => picker.DismissViewController(true, () => { }), useSynchronizationContext: true))
{
var result = await cameraDelegate.Task;
if (result != null)
{
var image = result.ValueForKey(new NSString("UIImagePickerControllerOriginalImage")) as UIImage;
var metadata = result.ValueForKey(new NSString("UIImagePickerControllerOriginalImage")) as UIImage;
var correctedImage = await FixOrientation(ct, image);
(Stream data, string extension) GetImageStream()
{
switch (PhotoSettings.Format)
{
case CameraCaptureUIPhotoFormat.Jpeg:
return(image.AsJPEG().AsStream(), ".jpg");
case CameraCaptureUIPhotoFormat.Png:
return(image.AsPNG().AsStream(), ".png");
default:
throw new NotSupportedException($"{PhotoSettings.Format} is not supported");
}
};
var(data, extension) = GetImageStream();
return(await CreateTempImage(data, extension));
}
else
{
return(null);
}
}
}
/// <summary>
/// This method takes a picture.
/// Right now the parameter is not evaluated.
/// </summary>
/// <param name="mode"></param>
/// <param name="options"></param>
/// <returns></returns>
public async Task<StorageFile> CaptureFileAsync(CameraCaptureUIMode mode, StoreCameraMediaOptions options)
{
var t = IsStopped();
this.options = options;
// Create new MediaCapture
MyMediaCapture = new MediaCapture();
var videoDevices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
var backCamera = videoDevices.FirstOrDefault(
item => item.EnclosureLocation != null
&& item.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Back);
var frontCamera = videoDevices.FirstOrDefault(
item => item.EnclosureLocation != null
&& item.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Front);
var captureSettings = new MediaCaptureInitializationSettings();
if(options.DefaultCamera == CameraDevice.Front && frontCamera != null)
{
captureSettings.VideoDeviceId = frontCamera.Id;
}
else if(options.DefaultCamera == CameraDevice.Rear && backCamera != null)
{
captureSettings.VideoDeviceId = backCamera.Id; ;
}
await MyMediaCapture.InitializeAsync(captureSettings);
// Assign to Xaml CaptureElement.Source and start preview
myCaptureElement.Source = MyMediaCapture;
// show preview
await MyMediaCapture.StartPreviewAsync();
// now wait until stopflag shows that someone took a picture
await t;
// picture has been taken
// stop preview
await CleanUpAsync();
// go back
CurrentWindow.Content = originalFrame;
mainGrid.Children.Remove(this);
return file;
}
private async Task <StorageFile> CaptureFile(CancellationToken arg, CameraCaptureUIMode mode)
{
return(null);
}
